Electrical connection for oven elements



Feb. 17. 1925.

J. H. ALLEN ELECTRICAL CONNECTION FOR OVEN ILEIENTS Filed Oct. 16. 1923Inventor Patented Feb. 17, 1925.

UNITED STATES PATENT OFFICE.

JOHN H. ALLEN, OF LONDON, ONTARIO, GANADA, A SSIGNOR TO THE MOCLARYMANU- FACTURING COMPANY, OF LONDON,

CANADA.

ELECTRICAL CONNECTION FOR OVEN ELEMENTS.

Application filed October 16, 1922. Serial No. 594,852.

To all whom it may concern:

Be it known that I, JOHN H. ALLEN, a subject of the King of GreatBritain, and resident of the city of London, county of Middlesex,Province of Ontario, in the Dominion of Canada, have invented certainnew and useful Improvements in Electrical Connections for Oven Elements,described in the following specification and illustrated in theaccompanying drawings, that form part of the same.

The objects of this invention are to overcome the dilficulties inconnecting oven elements with the wiring terminals and to devise a formof connection which will enable the element being completed before beingplaced in osition and providing a construction whic will allow of theelement be readily withdrawn at any time without disturbing the rigidelectric contacts.

A further object is to enable the electrical connections to be completedfrom the exterior of the oven structure.

The principal feature of the invention 7 consists in the novelconstruction and arrangement of parts whereby a plurality of electricalcontacts rigidly secured to the removable heating element are adapted toenter fixed contacts arranged in the oven wall in a position accessiblefrom the exterior.

In the drawings, Figure 1 is a horizontal sectional view through myimproved contact.

Figure 2 is a vertical sectional view, and

Figure 3 is an outside elevational view.

In the construction of electrical stoves it has always been a diflicultmatter to connect the oven elements with the electrical terminals as theinterior of the oven is small and difiicult of access and it is veryimportant that the contacts should be very securely fastened becauselooseness causes arcing and overheating with the consequent destructionof the terminals.

Further, it is important that the contacts should be kept free from thesteam and grease which permeate the oven and on account of the nature ofthe heating elements it is desirable that they should be easily andairs.

the screws 3. The strips 2 are provided with binding screws 4 to whichthe heater elements are connected and the outer ends are preferablyturned at right angles forming parallel blades 5.

The oven wall 6 is formed with a recess 7 open at the outer side andhaving a rectangular shaped hole through the inner wall in which isfitted an insulating block 8 secured by bolts 9. This block is formedwith slots 10 which are adapted to receive the contact blades 5, beingpreferably shaped with flaring openings 11 at the inner side.

Secured to the outer side of the block 8 are a plurality of metal strips12 which are rigidly fastened to the block by thescrews 13. The stripsare formed with slots 14 registering with the slots lO'in the block andat each side of the slots is formed a sprin finger 15. These springfingers are adapted to engage an electrical contact with the blades 5and thus form a very positive connection to the heater element.

The strips 12 are provided with binding screws 16 to which the electricleads are connected. These leads will of course be readily accessiblefrom the outside of the oven.

The recess 7 is preferably covered by a suitable insulating plate 17 andinsulating strips 18 are arranged between the strips 12. The severalcontacts are thus completely insulated, the one from the other and theen-. tire connection is ready.of access and may be handled with thegreatest ease and safety.

Electrical connections may be made independent of the oven elements andthe oven elements may be placed in position and re- 2. An electricalconnector for oven eiements, comprising a block of insulating materialhaving slots therethrough, s rin contact members secured to the heel 0said block either side of each of said slots and having suitableterminals, and rigid contact quickly removed for re In order toaccomplish this, I have secured to the heater element an insulatingblock. 1 which carries the terminal contacts 2. These are here shown inthe form of flat 55 metal strips rigidly secured to the block by stripssecured the heater element and adapted to pass through said slotsand-"engage the sprlng contacts.

3. An electrical connector for oven elements, com rising flat metalstrips rigidly secured to t e heater element, an insulating block havingslots extending therethrough, a plurality of plates secured to the outer

